What is 439 stainless steel?
Type 439 is an 18% chromium, titanium stabilized ferritic stainless steel with corrosion resistance similar to that of 304/304L stainless steel. This grade may be used in the annealed, cold formed or as-welded condition in applications where other stainless steels such as Type 304/304L and Type 430 are used.
What is the equivalent material of 439 stainless steel?
The primary equivalent materials for 439 stainless steel are UNS S43035, DIN 1.4510, and EN X3CrTi17. Other designations, such as JIS SUS430LX, are also used for this titanium-stabilized ferritic stainless steel.
| EU EN |
USA - |
Japan JIS |
France AFNOR |
Russia GOST |
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| X3CrTi17 (1.4510) |
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chemical composition of grade 439 stainless steel
| Element | Content (%) |
|---|---|
| Iron, Fe | 81.3535 |
| Chromium, Cr | 17.35 |
| Silicon, Si | 0.35 |
| Titanium, Ti | 0.335 |
| Manganese, Mn | 0.25 |
| Nickel, Ni | 0.200 |
| Molybdenum, Mo | 0.1 |
| Niobium, Nb (columbium, Cb) | 0.02 |
| Phosphorous, P | 0.02 |
| Nitrogen, N | 0.0100 |
| Carbon, C | 0.01 |
| Sulfur, S | 0.0015 |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength (annealed) | 438 MPa | 63500 psi |
| Yield strength (annealed/ @strain 0.200 %) | 263 MPa | 38100 psi |
| Modulus of elasticity | GPa | ksi |
| Poisson's ratio | 0.270 - 0.290 | 0.270 - 0.290 |
| Elongation at break (In 2", 50% cold worked) | 2.80% | 2.80% |
| Hardness, Rockwell B (annealed) | 72.9 | 72.9 |
Is 439 stainless steel magnetic?
Yes, 439 stainless steel is magnetic. It is a ferritic stainless steel, a type known for being magnetic due to its iron-rich composition and specific crystal structure.
What is the hardness of 439 stainless steel?
The hardness of annealed 439 stainless steel is typically between 70 and 90 Rockwell B (HRB), with a maximum hardness of 89 HRB as specified by ASTM standards. Some specific grades may fall within a narrower range, such as Rockwell B74 to B78.
What is the difference between 304 and 439 stainless steel?
The main difference lies in the fact that 304 is an austenitic stainless steel with a high nickel content, while 439 is a titanium-stabilized ferritic stainless steel. 439 typically has better resistance to chloride stress corrosion cracking and higher resistance to high-temperature oxidation, while 304 is more widely used in food processing and medical equipment.
What is the difference between 439 and 316 stainless steel?
The main difference is that 439 is ferritic stainless steel, which is more economical and magnetic, and also has good heat resistance and corrosion resistance, while 316 is austenitic stainless steel, which has superior corrosion resistance, especially in marine or chloride environments.
If you have any project needs for 439 1.4510 stainless steel, please feel free to place an order. GNEE has a large inventory of popular products for you to choose from. It can be processed into various practical product forms, including plates, coils, pipes, bars, and wires. For detailed chemical composition and free samples, please contact our factory immediately. We offer competitive prices and excellent service.
